- Oct 17, 2011
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For the first time, paleontologists have discovered a near-complete skull of Australopithecus anamensis. The fossil, a bony visage with a protruding jaw and large canine teeth, dates back 3.8 million years, indicating that A. anamensis probably overlapped with Lucy's species, Australopithecus afarensis, for at least 100,000 years.
"What we see is a unique combination of adaptations that was apparently stable across a million years or more," Kappelman said. "Instead of studying these ancient fossil hominins as simply our ancestors, it is equally important to understand them as once-living animals that were well adapted to their particular environments; this latter approach permits us to better understand the sorts of selection pressures that drove human evolution."
"What we see is a unique combination of adaptations that was apparently stable across a million years or more," Kappelman said. "Instead of studying these ancient fossil hominins as simply our ancestors, it is equally important to understand them as once-living animals that were well adapted to their particular environments; this latter approach permits us to better understand the sorts of selection pressures that drove human evolution."